Music library widget context menus do not show correct items

[twhiston]

Describe the bug

Using music widgets and music library navigation does not produce music context menus so you cannot play albums etc. Music library displays should have correct context menus.

To Reproduce

Steps to reproduce the behavior:

1. Have a music library synced with PlexKodiConnect
2. Add a music widget to the home screen (Artic: Zepyr - Reloaded)
3. Select an item and bring up the context menu
4. Only add to favourites is shown

Alternately:

1. Enter the plugin menu and navigate to music, recently added (for example)
2. select an album and bring up the context menu
3. note the lack of play options

Expected behavior

You get the music widget context menu as you do from library browsing, which would enable you to play, enqueue etc. the music in question.
I believe this might be because the widgets are not defined as music nodes, and as such get the wrong context menu?